theory11 — Magic Tricks & the World's Finest Playing Cards

What are some good PK touch routines?

Banachek is the foundation. D'Angelo's Touch does bring something new to the table as far as I know. Other sources - Lior Manor's Invisible Touches (He goes over much of it on his Penguin Lecture, too) and Peter Turner's version as well.

Luke Jermay has some work on it also. As does Colin Cloud.